first commit

core/apps/management/models/toyMovement.py

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+from django.db import models
+from .device import Device
+from .warehouse import Warehouse
+from ..choice import TOY_MOVEMENT_TYPE
+
+class ToyMovement(models.Model):
+    movement_type = models.CharField(max_length=30, choices=TOY_MOVEMENT_TYPE)
+    from_warehouse = models.ForeignKey(
+        Warehouse, on_delete=models.PROTECT,
+        related_name="outgoing"
+    )
+    to_warehouse = models.ForeignKey(
+        Warehouse, on_delete=models.PROTECT,
+        related_name="incoming",
+        null=True, blank=True
+    )
+    device = models.ForeignKey(
+        Device, on_delete=models.PROTECT,
+        null=True, blank=True
+    )
+    quantity = models.PositiveIntegerField()
+    created_by = models.ForeignKey("accounts.User", on_delete=models.PROTECT)
+    created_at = models.DateTimeField(auto_now_add=True)